class CoordTestCase(unittest.TestCase):
def setUp(self):
self.test_x = 1
self.test_y = 2
self.coord = Coord(x=self.test_x, y=self.test_y)
def tearDown(self):
del self.coord
def test_constructor(self):
with self.assertRaises(TypeError):
Coord(x="string", y="zz")
with self.assertRaises(TypeError):
Coord(x=(1.0, 1), y=0)
def test_x_coord(self):
self.assertEqual(self.test_x, self.coord.x)
self.assertNotEqual(self.coord.x - 1, self.coord.x)
def test_y_coord(self):
self.assertEqual(self.test_y, self.coord.y)
self.assertNotEqual(self.coord.y - 1, self.coord.y)
def test_string_representation(self):
self.assertEqual("({}, {})".format(self.test_x, self.test_y),
str(self.coord))
def test_copy(self):
copy = self.coord.copy()
self.assertEqual(copy, self.coord)
def test_distance(self):
copy = self.coord.copy()
self.assertEqual(0, self.coord.distance(copy))
self.assertEqual(0, self.coord.distance(self.coord))
self.assertEqual(0, copy.distance(self.coord))
self.assertEqual(0, copy.distance(copy))
dist = 2**0.5
self.assertEqual(dist, Coord(x=0, y=0).distance(Coord(x=1, y=1)))
self.assertEqual(dist, Coord(x=0, y=0).distance(Coord(x=1, y=-1)))
self.assertEqual(dist, Coord(x=0, y=0).distance(Coord(x=-1, y=1)))
self.assertEqual(dist, Coord(x=0, y=0).distance(Coord(x=-1, y=-1)))
dist = 2
self.assertEqual(dist, Coord(x=0, y=0).distance(Coord(x=0, y=2)))
self.assertEqual(dist, Coord(x=0, y=0).distance(Coord(x=0, y=-2)))
self.assertEqual(dist, Coord(x=0, y=0).distance(Coord(x=2, y=0)))
self.assertEqual(dist, Coord(x=0, y=0).distance(Coord(x=-2, y=0)))
